mask_autos->get_prev_auto(position, PLAY_FORWARD, (Auto *&)prev_auto, 1);
MaskAuto *prev_mask = (MaskAuto *)prev_auto;
ArrayList<MaskPoint*> points;
mask_autos->get_prev_auto(position, PLAY_FORWARD, (Auto *&)prev_auto, 1);
MaskAuto *prev_mask = (MaskAuto *)prev_auto;
ArrayList<MaskPoint*> points;